1,721,007 research outputs found

    Metodo e apparecchiatura per la prova di forcelle ciclistiche e motociclistiche

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    Il brevetto corrisponde ad un simulatore di strada per forcelle motociclistiche basato su tre canali di carico disaccoppiati: FP, forza parallela all’asse sterzo, FN, forza normale all’asse sterzo, FB, forza di frenatura al disco. Le storie di carico rilevate su strada possono essere riprodotte al banco tramite un sistema complesso di opportune strutture di vincolo e carico. Il sistema risulta uno strumento potente e versatile unico nel suo genere per la verifica strutturale completa di forcelle motociclistich

    SVILUPPO DI UN SIMULATORE DI STRADA PER PROVE COMPLESSE SU FORCELLE MOTOCICLISTICHE

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    Il lavoro presenta lo sviluppo di un simulatore di strada per forcelle motociclistiche (MAFRS) realizzato presso la Paioli Meccanica (Bo) basato su tre canali di carico disaccoppiati: FP, forza parallela all’asse sterzo, FN, forza normale all’asse sterzo, FB, forza di frenatura al disco. Le storie di carico rilevate su strada possono essere riprodotte al banco tramite un sistema complesso di opportune strutture di vincolo e carico. Il MAFRS risulta uno strumento potente e versatile unico nel suo genere per la verifica strutturale completa di forcelle motociclistiche

    Field Load Acquisition and variable amplitude fatigue testing on maxi-scooter motorcycles

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    Aim of the present work was the instrumentation of a maxi scooter for the field collection of service loads acting on the scooter main components such as frame, fork, handlebar, rear frame and suspension. Service loads were collected on an instrumented Yamaha Tmax scooter equipped with 22 channels during a set of field tests that were representing a predefined road mix, covering a mileage of 270 km. Field load histories were used to develop an accelerated test procedure for the accelerated bench fatigue testing of a new model prototype whose mission was set to 50000 km. The acceleration procedure allowed a time reduction from 1600 hrs to 122 hrs bench equivalent testing. Both the benchmark scooter Tmax and a maxi-scooter prototype under development underwent the bench variable amplitude fatigue testing. The results of the fatigue tests on the prototype allowed to identify some critical bolted connections and to reduce some stress concentration features causing the appearance of small cracks that were found also after during 50000 km of driving tests

    Saraceni, Mario

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    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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